...... I think I know this from somewhere.... Hmm.... Oh! I know, I saw two Animes with a child as teacher, one was with magic, and the other.... I'm not sure, there were aliens in there.... And sometimes stuff around them were like props from a movie set.... Well, it was more like the props you see in a theater though.... And it was mostly random stuff aswell.......... Yeah, I never did understand what it was about.
All in all though, I kinda do like the idea of an eight year old child as a sensei.